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Field test of feeder protection ABB REF615 using an experimental model of 22kV distribution system
 Váhala, Václav ; Orságová, Jaroslava (referee) ; Topolánek, David (advisor)
The main purpose of the bachelor thesis is to describe, preset and verify function of digital protection ABB REF615. The thesis is focused on detailed description from the protection function and hardware configurations point of view. The thesis also informs about parameters of experimental model of medium voltage distribution network. This model was used for operation testing of selected protection functions. First of tested function was admittance earth fault protection respectively conductance protection. This conductance principle is based on admittance protection function where only real part of zero sequence admittance is evaluated. Intermittent earth fault, phase directional over-current protection and circuit breaker failure protection were tested next. Evaluation of all test results is subject of the final part of the thesis.
Detailed record
Field test of feeder protection ABB REF615 using an experimental model of 22kV distribution system
 Váhala, Václav ; Orságová, Jaroslava (referee) ; Topolánek, David (advisor)
The main purpose of the bachelor thesis is to describe, preset and verify function of digital protection ABB REF615. The thesis is focused on detailed description from the protection function and hardware configurations point of view. The thesis also informs about parameters of experimental model of medium voltage distribution network. This model was used for operation testing of selected protection functions. First of tested function was admittance earth fault protection respectively conductance protection. This conductance principle is based on admittance protection function where only real part of zero sequence admittance is evaluated. Intermittent earth fault, phase directional over-current protection and circuit breaker failure protection were tested next. Evaluation of all test results is subject of the final part of the thesis.
Detailed record

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